gymnosperm


gymnosperm
gym·no·sperm 'jim-nə-.spərm n any of a class or subdivision (Gymnospermae) of woody vascular seed plants (as conifers or cycads) that produce naked seeds not enclosed in an ovary and that in some instances have motile spermatozoids compare ANGIOSPERM
gym·no·sper·mous .jim-nə-'spər-məs adj

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gym·no·sperm (jimґno-spərm) [gymno- + sperma] a plant in which the seeds are not enclosed in an ovary.

Medical dictionary. 2011.

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  • Gymnosperm — Gym no*sperm (j[i^]m n[ o]*sp[ e]rm), n. (Bot.) A plant that bears naked seeds (i. e., seeds not inclosed in an ovary), as the common pine and hemlock. Cf. {Angiosperm}. [1913 Webster] …   The Collaborative International Dictionary of English

  • gymnosperm — 1830, from Fr. gymnosperme and Mod.L. gymnospermus (17c.), lit. naked seed (i.e., not enclosed in an ovary), from GYMNO (Cf. gymno ) + sperma seed (see SPROUT (Cf. sprout)) …   Etymology dictionary

  • gymnosperm — ► NOUN ▪ a plant of a large group that have seeds unprotected by an ovary or fruit, including conifers and cycads. Compare with ANGIOSPERM(Cf. ↑angiosperm). ORIGIN from Greek gumnos naked …   English terms dictionary

  • gymnosperm — [jim′nō spʉrm΄, jim′nəspʉrm΄] n. [ModL gymnospermus < Gr gymnospermos: see GYMNO & SPERM] any of a large division (Pinophyta) of seed plants having the ovules borne on open scales, usually in cones, and usually lacking true vessels in the… …   English World dictionary

  • Gymnosperm — Taxobox name = Gymnosperms fossil range = fossil range|370|0Devonian Recent image width = 150px image caption = White Spruce leaves (needles) regnum = Plantae subdivision ranks = Divisions subdivision = Pinophyta (or Coniferophyta) Conifers… …   Wikipedia

  • gymnosperm — gymnospermism, n. /jim neuh sperrm /, n. Bot. a vascular plant having seeds that are not enclosed in an ovary; a conifer or cycad. Cf. angiosperm. [1820 30; < NL gymnospermae name of type. See GYMNO , SPERM] * * * Any woody plant that reproduces… …   Universalium

  • gymnosperm — noun Etymology: ultimately from Greek gymnos + sperma seed more at sperm Date: circa 1838 any of a group of vascular plants that produce naked seeds not enclosed in an ovary, that were formerly considered a class (Gymnospermae) of seed plants,… …   New Collegiate Dictionary

  • gymnosperm — noun Any plant such as a conifer whose seeds are not enclosed in an ovary …   Wiktionary

  • gymnosperm — n. plants whose seeds are exposed (Botany) …   English contemporary dictionary

  • gymnosperm — [ dʒɪmnə(ʊ)spə:m] noun Botany a plant of a group (subdivision Gymnospermae) that comprises those that have seeds unprotected by an ovary or fruit, including conifers and cycads. Compare with angiosperm. Derivatives gymnospermous spə:məs adjective …   English new terms dictionary